Bed and cylinder printing press



April 18, 1933. c. B. COTTRELL, 30 1,904,855

BED AND CYLINDER PRINTING PRESS Filed May 7, 1931 3 Sheets-Sheet 1 INVENTOR may BY 2 w ATTORNEYS April 18, 1933. c. B. COTTRELL, 3D

BED AND CYLINDER PRINTING PRESS 3 Sheets-Sheet 2 N m 2 .7 INN W n J m R o M M aw m 0 w n m A &N 5 :2 F: 5-: :5 m m A 6m April 18, 1933. c. B. COTTRELL, 3D

BED AND CYLINDER PRINTING PRESS Filed May 7, 1931 3 Sheets-Sheet 3 ATTORNEYS Patented Apr. 19 33 CALVERT 100mm,: 311, OEWESTEBLY; monnrsmn, AssIeNoR iron. n-comrnnnn s; a sonsicommx;or:awnsrnnny nnonn ISLAND, A coaronnrro r-or DELAWARE Application fiiai n a '7, 1931 s n in 535,655. h

" minimum mo-vementof the impression cylin der and'form bed. 7

My invention comprises an] impression cylinder which oscillates about one and onehalf} revolutions on eachiof its' forwardand 7 reverse strokes,*said cylinder beingoperable tolprint one'she'et and deliver a previously printedsheet tail end first-on each stroke of thecylinder; two sheet feeders and two delivery mechanisms being-provided, the sheet feeders being arranged to alternatelyfe'ed the sheets to the under side of the" impression cylinder and the two delivery mechanisms being arranged to alternatelytake the printed sheets tail'ends first-from the upper'side of theimpression cylinder;

My invention further'comprises'a bed and cylinder printingpressinwhich the rcipr eating bed carries asingleform which coacts' with' the impression cylinder onboth its'forproduct and transfer it to "two deliveries;

. My invention still further'comprises two inking mechanisms operable respectively to ink the form on the forward and reverse; 'strokes vof the bed; means being provided on the bed for controlling the raising and lowering of-the inkingmechanisms out of and into position to contact with; the 'formon the re -;ciprocating bed;

A practlcal embodiment ofrny invention is represented in the aceompsn in drawingsin which:

Fig; 1 represents a side elevation gof'rmyfj -improved bed andcylinderfprintingpress,

'the parts being sho-wninthepositions"they transferred, tail end first to its delivery mech anism; the position of the form bed being at the end of its for;

shown in dotted lines 5 Ward stroke.

I pingthe tail end Ofl printed sheetlfromthe cylinder and transferring/Rio its delivery; mechanism as the Cylinder. startsfon its for wardstroke. i

'wardand reverse strokes, to print a single Fig.2 represents a details'ide vievv-of the 1 bed and 'cylin cler injthelpositionsshownin" Fig. 1, and illustrating the means for control-j ling the operation of the'left hand sheet stop and one set of grippers. 5 E 1 Fig 3' represents asifnilar vie'vv Wlth tll bed and cylinder at, the ends oftheirfforivard strokes'and illustrating themeansfo-roperji atingfthe right hand stripper to transfer the-f tail end of' the printed sheet from? the, cylinder. i i "a it ic-0 Fig. 4 represents similarvietv showingi thebed and cylinder partwviypf their reverse strokes and illustrating the means-for oper hand'sheet stopLj .n v a 7 Fig. i 5 representsfa similar vievvlsho'wing the bed and cylinder a-tthe limitoftheinre-f i verse strokes and illnstratin gpthe means'for; p operating the 1eftha'ndistripperfor strip? atingjthe other set of and thejri'ght Fig.- 6' represents a detailtop plan view 'of f the bed andcylinderwvith thepa'rts-inthef a;

positionsshown in Fig, '5'.-

7 represents a detail-view the tumbler cam actuatedmechanism*withthe;

tumbler cam actuating pin in its normal re tractedpositiong a Y Fig. 8 represents afdeta-il viewof ltheyi eld j onthe reverse strokeo fthebefd, l

ig, 9 represents similan view of Eth' yielding cam for spewi g thetumblei 1am pin on the-forward strokefofthe' bed Fig; loaepre sentsa detail diagrammatic View h w t e a iv positions {of he;

several parts" as thelfi rsti sheet to begprinted on the forward strokesfoft (ler has been taken by its grippers.

' Fig. 11 represents *asimilar view bed" and'cylinder finish the [printing first sheet on their forward strokes? 5 Fig[ 12 representsla similar v e as th bed andc linde'rreach thejend transfer 5 Wardstrolief and Fare aboiit-to start on? thei 5 reverse stroke to deliver. the firstYsheeti-ta end, first to the right hand delivery M anism.

Fig. 13 represents a similar view as the bed and cylinder reach a position on their reverse 1 stroke where the second sheet is about to be taken by its grippers and the head end of the first. sheet is released by its grippers. Fig. 14 represents a similar view. as the printing of the second sheet is started.

Fig. 15 represents a similar view as the printing of the second sheet is finished."

Fig. 16 represents a similar View 'as the bed and cylinder complete their reverse strokes and the second sheet is about to be transferred, tail end first to the left'hand delivery mechanism.

Fig. 17 represents a vlew'similar to Fig.

showing thethird sheet about to be taken as the second sheet is being delivered on the forward strokes of the bed and cylinder.

Fig. 18 represents a similar view as the printing of the third sheet is finished.

The main frame of the printing press is denoted by 1. The form bed which is fitted to reciprocate in the'main frame is denoted 'by 2 and its single form thereon by 3. This bed may be reciprocated by any suitable means, such for instance asa motive fluid form 3. A cam 8 on the form bed is are ranged in position to raise the form rollers of one inking mechanism out of position to contact with the form on one stroke of the bed and a cam 9 on the formbed is arranged in position to raise the form rollers of the other inking mechanism out of position-to contact with the form on the opposite stroke. of the bed. The oscillating impression cyli inder 10 is fixedly mounted in the main frame 1 and it is geared at all times to the reciprocating bed through the usual gear and 1 rack connection 11, .12. The movement of the bed is sufficient to rotate the cylinder more than one revolution, preferably about one.

and one-half revolutions .in each direction.

This oscillating impression cylinder is provided with two sets of tumbler actuated grippers 13 and 14, their tumbler cams being denoted by 15 and. 16 respectively. A single tumbler cam actuating pin 17 is slidable into the path of the tumbler cams 15 and 16 at the proper times. to open and close the grippers 13 and 14 and is held yieldingly out of the path of the cams by the spring 7 18. The pin operating rock lever is pivoted Each inkat 19 to the main frame 1 and it has one arm 20 which engages the pin to move it laterally into the path of the tumbler cams and the stud or roller on the other arm 21 of which lever is arranged in position to be engaged by the yielding cam 22 as thebed moves in one direction: andfby the camf23 when the bed moves in the opposite direction.

' The two oppositely disposed sheet feed tables'which may belpartsgof any .well known or approved sheetfeeding mechanisms are denoted by 24 25 and they are arranged in position to feed the sheets to their respective grippers 13 and 14 when the grippers are at the'und er side of the impression cylinder.

The two sheet feed stops 26I and 27 for the. tables 24 and 25 controlled by cams 28 and 29 respectively, on the reciprocating form bed 2.

The two oppositely disposed sheet deliv'.

ery mechanisms may, also be of I any well known or approved form,:those shown herein comprising the oppositely disposed, sheet strippers 30 and 31, the endless sheet car-j riers 32 and 33and the two pairs of coacting sheet delivery rolls 34, 35 and 36,37.v The.

operation ofthe stripper 30. iscontrolle d by" acani 38 onthe bed 2 and the operation of the stripper 31 is controlled by a cam 39 also on the reciprocating formbed. I

The operation of the printing pressis as follows: Presupp osing the printing operation to be about to start and the inthe positions shown in Fig. 10 of the drawings with the bed and. cylinder moving on their forward strokes from the pointsshown in Fig. 16,thegrippers 13 will close on their, first-sheetto be printed, fed from the table 24. During this forward. printing stroke.

the first sheet'will be fully printed as the cylinder reaches the position shown in Fig. 11. The cylinderthen completes the substantially one andone-half'revolutions of its forwardstroke to the point shown in Fig.

12 where theftailend ofv theprintedsheet will be brought beyond the stripper 31. I The impression cylinder and bed will then, start on their reverse strokes, causing the tail end of the first printed sheet to be stripped from the cylinder and transferred tothe 'coacting delivery rolls 36,37 and endless deliveryv carrier 33'. When the bed and, cylinder reach the position shown; in Fig. 13, the grippers 13 are opened to release thefirst printed sheet and the grippers 14, are closed onto the head end of their sheet fed from f --the feed table. 25. When the parts reach the position shown in Fig. 14 the rinting' of the second sheet is} started. hen the parts reach'the positions shown in Fig.15 the printing, of the second sheet has been completed. When. the parts reach the position shown in'Fi'g. 16 the bed and cylinder have reached thelimit of their reverse move? ments and the tailend of; the second printed:

sheet has been brought ,beyond the strip- PerwpThe bed i and cylinder then start. again on their forward stroke,causing theastripper 30 to strip the :tail end :of.theasecondprinted sheet from-the cylinder and transfer it to the-coacting deliveryrolls 34, and endless; carrier :32. .Whenthe par-ts reach. the 'posi- '10 tion: shown in Fig. 17 the third sheet is 'taken' by" the grippersd?) and the *head 'end of the second printedvl sheetmis released. Fig. shows; the positions: of "the parts as 'theprintJ ing 7 of jth third sheet has beenncompleted, t5 the parts being ill'l' the positions'; shown in Fig... 11". FromIthis time onj'a sheet willfbe printed 1. and a previously printed sheet will be delivered "on each forwardand reverse stroke of thezbedj and "cylinder.

a bed and cylinder press and a largerproduct 30) obtained in a predetermined time than heretofore.

It will also be seen that by providing means for driving the form rollers of both of,

the inking mechanisms at all times intone 135; direction a more even distribution and application of the ink to the form may be obtained than Was possible where the form rollers were rotated first in one direction and then in the opposite directionduring the ream ciprocation of the bed. i

It is evident that various changesmay be resorted to in the construction, form and ar rangement of the several parts without departing from the spirit and scope of my invention, and hence I do not intend to be limited to the particular embodiment herein shown and described.

What I claim is:

1. In a bed and cylinder printing press, a

new reciprocating form bed, and an oscillating impression cylinder operable, on each stroke,

to print one sheet and deliver a previously printed sheet tail end first.

2. In a bed and cylinder printingpress, a

% reciprocating form bed, an oscillating impression cylinder operable, on each stroke, to print one sheet and deliver a previously printed sheet, tail end first, and two inking mechanisms, one operable to ink the form on 'fiQEone stroke and the other on the opposite stroke of the bed. 7

3. In a bed and cylinder printing'press, a reciprocating form bed, an oscillating impression cylinder operable, on each stroke, 7

to print one sheet and deliver a. previously From the above 1 description it will be. seen 'erable to take the printedshee'ts alternately; from, the upper. side of the cylinder in oppo printed sheet tail end'afirst; landttwoi feeders} operable to feed the sheets alternately; to .the

under sideof-the impression cylinderiiom;

the opposite sides thereof. t 1 I ,4. 'In ,a bed and, cylinder :printingkpreSs, a reciprocating form bed, oscillating 1 inrw pression cylinder operable, on each stroke, to

print one sheet and delivera previously 7 printedsheet tail end; first, two feeders. op: T erablel to feed thesheets alternatelyttothe erable. totake the printed sheetsialternately from the upperside of tlie, cylinder inoppoa site directions... a, Y i 1 Y Y ;5. In. a bed and. cylinder a reciprocating f-orm bed,,anoscillating-in: pression cylinder perable,"on each stroke, to-

. print ,one gsheetl and deliver a previously},

printed sheet tail end first, two feedersopen able to feed the sheets alternately to the 11nder sideof theimpression cylinder fromop posite sides thereof,,and two-deliveries op site directions, each deliv'ery .including aj j stripper operated by the, bed for stripping he l' end the m nted sh efrqm the cylinders; l i

- Inabed and a tnaagpaaag as,a reciprocating form bed, an oscillating; pression cylinde ope able, on e h s roke, t

'p o ie h t n nd rei' ,e p vious rj f printedsheet tail end first, two inking inech a isms on ope a to l kthe ormxon 0 9 1 stroke and the other on; the. opposite stroke of the ibed, and two.ifeedersjoperable to feed t the sheets alternately to the under side the impression cylinder from the opposite gsides e -1 1- a 5 v f l." e ar cy i e pri ti iepre ee e p o 't g .fo m ol d, a oscillat ng pression cylinder operable, on each, stroke, to print one sheet and deliver a previously; pr nte s ee a n first, tw i ng meek anisms, one operable to ink the form. on one i.

- stroke 5 and; the l other on the I opposite stroke;

ofthe bed, two feeders operable flto feed the sheets alternately to the under, side of the im-I I p e si n @vhncl fwm' thei ii q ee es. thereof, and; two deliveries operable: to take, a

the printed sheets alternately fromthejup per side of-the cylinder in opposite directions. 8, In a bedand cylinder printing press,1ap

reciprocating form bed, an pscillating, ,im;

pression cylinder operable,-onieach storkea to printione, sheet j and; deliver ,a previously printed sheet tail endfirst, twoinking mech-i; ni m e. pe t i k ei o 1. on

stroke and the other on the opposite stroke} of the bed, a two feeders operable; to feed rthej sheets alternatelyto the unclereside;ofv the im pres ie i cyli mOPPOLSi d -th r txa da we d ive i operab -t k herintedfsheets a eln fremeth upper It 75 under side of. the impression cylinder from, opposite sides thereof, 1 and-two ,djeliveries opside" of the cylinder in opposite directions, each delivery including a stripper operated by the bed for stripping the tail end of the printed sheet from thecylinder.

9. In a bed and cylinder printing press,

a reciprocating form bed,-an d an impression cylinder arranged to oscillate about one and one-half revolutions in each direction, said cylinder being operable, on each stroke, to 3 print one sheet and ,deliver a previously printed sheet tail end first. v

"10. In a bed and cylinder printing press, a recpircating form bed, an impression cylinder arranged to oscillate about one and onehalfrevolutions in each direction, said cylinder being operable, on each stroke, to print one sheet and deliver a previously printed sheet tail end first, and two inking mechanisms, one operable to ink' the form on one stroke and the other on the opposite stroke of the bed."

11; In a bed and cylinder printing press,

a reciprocating form bed, an impression cylinder arranged to oscillate about one and one- 4 half revolutions in each direction','said cylinder being operable, on each stroke, to print one sheet and deliver a previously printed sheet tail end first, and two feeders operable to feed the sheets alternately to the under sideof the impression cylinder from opposite directions.

[12. In a bed and cylinder printing press, a reciprocating form bed, an impression cylinder-arranged to oscillate about one and one-half revolutions in each direction, said cylinder being operablefon each stroke, to print one sheet and deliver a previously printed'sheet tail end first, two feeders operable to feed the sheets alternately to the under side -of the impression cylinder from opposite sides thereof, and two deliveries operable to take the printed sheets alternately from the upper side of the cylinder in opposite directions.

'13. In a bed and cylinder printing press, a reciprocating form bed, an impressionc'ylinder arranged to oscillate about one and one half revolutions in each direction, said cylinder being operable, on each stroke, to print If one sheet and deliver a previously printed sheet tail end first, two inking mechanisms, one operable to ink the form on one stroke and the other on the opposite stroke of the bed, and two feeders operable to feed the sheets alternately to the under side of the impression cylinder from opposite sides thereof.

14. In a bed and cylinder printing press, a reciprocating form bed, an impression cylu inder arranged to oscillate about one and onehalf revolutions in each direction, said cylinder being operable, on each stroke, to print one sheet and deliver a previously printed sheet, tail end first, two inking mechanisms, one operable to ink the form on one stroke and 651' the other on -the opposite stroke of the bed,

two feeders operated to feed the sheets al ternatelyto the'under side of the impression cylinder from opposite sides thereof, and

tWo deliveries operable to takethe printed sheets alternately from the upper side of ly ,to the two sets of grippers at the under side of the cylinder-from opposite sides there of, means for taking the'printedsheets alternately. from the cylinder, tailend first at the upper side of the cylinder in opposite difor rect-ions, and means controlled by the bed opening and closing the grippers;- 3

In testimony, that I claim the foregoing as my invention, I have signed my name this 1stday of May, 1931.

, CALVERT B. COTTRELL, a; 

